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Ryan Miville
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‎.github/workflows/test.yml

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name: test
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on:
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push:
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branches:
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- master
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- main
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pull_request:
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jobs:
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test:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: erlef/setup-beam@v1
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with:
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otp-version: "26.0.2"
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gleam-version: "1.5.1"
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rebar3-version: "3"
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# elixir-version: "1.15.4"
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- run: gleam deps download
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- run: gleam test
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- run: gleam format --check src test

‎.gitignore

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*.beam
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*.ez
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/build
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erl_crash.dump
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.DS_Store

‎README.md

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# glambda
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Write AWS Lambda functions in Gleam!
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[![Package Version](https://img.shields.io/hexpm/v/glambda)](https://hex.pm/packages/glambda)
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[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/glambda/)
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```sh
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gleam add glambda
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```
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```gleam
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// .src/handler.gleam
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import glambda.{
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type ApiGatewayProxyEventV2, type ApiGatewayProxyResultV2, type Context,
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type JsContext, type JsEvent, type JsResult, ApiGatewayProxyResultV2,
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}
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import gleam/javascript/promise.{type Promise}
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pub fn typed_handler(event: ApiGatewayProxyEventV2, ctx: Context) -> Promise(ApiGatewayProxyResultV2) {
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let response =
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ApiGatewayProxyResultV2(
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status_code: 200,
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headers: dict.from_list([#("Content-Type", "text/plain")]),
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body: Some("hello! from " <> ctx.function_name),
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is_base64_encoded: False,
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cookies: [],
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)
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promise.new(fn(resolve) { resolve(response) })
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}
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pub fn handler(event: JsEvent, ctx: JsContext) -> Promise(JsResult) {
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glambda.api_gateway_proxy_v2_handler(typed_handler)(event, ctx)
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}
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```
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Further documentation can be found at <https://hexdocs.pm/glambda>.
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## Development
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```sh
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gleam run # Run the project
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gleam test # Run the tests
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```

‎birdie_snapshots/api_gateway_v2_http_request_with_iam_authorizer.accepted

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---
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version: 1.2.3
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title: API Gateway V2 HTTP request with IAM authorizer
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file: ./test/glambda_test.gleam
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test_name: api_gateway_v2_http_request_iam_marshaling_test
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---
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ApiGatewayProxyEventV2(
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version: "2.0",
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route_key: "$default",
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raw_path: "/my/path",
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raw_query_string: "parameter1=value1&parameter1=value2&parameter2=value",
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cookies: Some(["cookie1", "cookie2"]),
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headers: dict.from_list([
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#("Header1", "value1"),
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#("Header2", "value2"),
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]),
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query_string_parameters: Some(dict.from_list([
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#("parameter1", "value1,value2"),
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#("parameter2", "value"),
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])),
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path_parameters: Some(dict.from_list([
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#("proxy", "hello/world"),
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])),
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stage_variables: Some(dict.from_list([
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#("stageVariable1", "value1"),
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#("stageVariable2", "value2"),
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])),
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request_context: ApiGatewayRequestContextV2(
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route_key: "$default",
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account_id: "123456789012",
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stage: "$default",
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request_id: "id",
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authorizer: Some(Iam(iam: ApiGatewayEventRequestContextIamAuthorizer(
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access_key: "ARIA2ZJZYVUEREEIHAKY",
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account_id: "1234567890",
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caller_id: "AROA7ZJZYVRE7C3DUXHH6:CognitoIdentityCredentials",
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principal_org_id: "AwsOrgId",
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user_arn: "arn:aws:iam::1234567890:user/Admin",
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user_id: "AROA2ZJZYVRE7Y3TUXHH6",
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))),
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api_id: "api-id",
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domain_name: "id.execute-api.us-east-1.amazonaws.com",
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domain_prefix: "id",
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time: "12/Mar/2020:19:03:58+0000",
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time_epoch: 1583348638390,
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http: ApiGatewayEventRequestContextHttp(
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method: "GET",
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path: "/my/path",
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protocol: "HTTP/1.1",
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source_ip: "IP",
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user_agent: "agent",
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),
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authentication: Some(ApiGatewayEventRequestContextAuthentication(client_cert: APIGatewayEventClientCertificate(
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client_cert_pem: "-----BEGIN CERTIFICATE-----
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MIIEZTCCAk0CAQEwDQ...",
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issuer_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Private CA",
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serial_number: "1",
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subject_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Client",
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validity: APIGatewayEventValidity(
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not_after: "Aug 5 00:28:21 2120 GMT",
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not_before: "Aug 29 00:28:21 2020 GMT",
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),
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))),
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),
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body: Some("{
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"a": 1
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}"),
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is_base64_encoded: False,
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)

‎birdie_snapshots/api_gateway_v2_http_request_with_jwt_authorizer.accepted

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---
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version: 1.2.3
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title: API Gateway V2 HTTP request with JWT authorizer
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file: ./test/glambda_test.gleam
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test_name: api_gateway_v2_http_request_jwt_authorizer_test
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---
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ApiGatewayProxyEventV2(
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version: "2.0",
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route_key: "$default",
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raw_path: "/my/path",
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raw_query_string: "parameter1=value1&parameter1=value2&parameter2=value",
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cookies: Some(["cookie1", "cookie2"]),
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headers: dict.from_list([
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#("Header1", "value1"),
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#("Header2", "value2"),
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]),
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query_string_parameters: Some(dict.from_list([
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#("parameter1", "value1,value2"),
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#("parameter2", "value"),
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])),
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path_parameters: Some(dict.from_list([
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#("proxy", "hello/world"),
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])),
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stage_variables: Some(dict.from_list([
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#("stageVariable1", "value1"),
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#("stageVariable2", "value2"),
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])),
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request_context: ApiGatewayRequestContextV2(
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route_key: "$default",
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account_id: "123456789012",
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stage: "$default",
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request_id: "id",
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authorizer: Some(Jwt(
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principal_id: "admin",
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integration_latency: 123,
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jwt: ApiGatewayEventRequestContextJwtAuthorizer(
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claims: dict.from_list([
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#("claim1", "value1"),
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#("claim2", "value2"),
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]),
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scopes: Some([
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"scope1",
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"scope2",
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]),
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),
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)),
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api_id: "api-id",
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domain_name: "id.execute-api.us-east-1.amazonaws.com",
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domain_prefix: "id",
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time: "12/Mar/2020:19:03:58+0000",
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time_epoch: 1583348638390,
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http: ApiGatewayEventRequestContextHttp(
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method: "GET",
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path: "/my/path",
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protocol: "HTTP/1.1",
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source_ip: "IP",
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user_agent: "agent",
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),
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authentication: Some(ApiGatewayEventRequestContextAuthentication(client_cert: APIGatewayEventClientCertificate(
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client_cert_pem: "-----BEGIN CERTIFICATE-----
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MIIEZTCCAk0CAQEwDQ...",
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issuer_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Private CA",
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serial_number: "1",
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subject_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Client",
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validity: APIGatewayEventValidity(
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not_after: "Aug 5 00:28:21 2120 GMT",
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not_before: "Aug 29 00:28:21 2020 GMT",
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),
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))),
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),
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body: Some("{
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"a": 1
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}"),
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is_base64_encoded: False,
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)

‎birdie_snapshots/api_gateway_v2_http_request_with_lambda_authorizer.accepted

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---
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version: 1.2.3
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title: API Gateway V2 HTTP request with Lambda authorizer
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file: ./test/glambda_test.gleam
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test_name: api_gateway_v2_http_request_lambda_authorizer_test
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---
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ApiGatewayProxyEventV2(
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version: "2.0",
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route_key: "$default",
10+
raw_path: "/my/path",
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raw_query_string: "parameter1=value1&parameter1=value2&parameter2=value",
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cookies: Some(["cookie1", "cookie2"]),
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headers: dict.from_list([
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#("Header1", "value1"),
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#("Header2", "value2"),
16+
]),
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query_string_parameters: Some(dict.from_list([
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#("parameter1", "value1,value2"),
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#("parameter2", "value"),
20+
])),
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path_parameters: Some(dict.from_list([
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#("proxy", "hello/world"),
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])),
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stage_variables: Some(dict.from_list([
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#("stageVariable1", "value1"),
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#("stageVariable2", "value2"),
27+
])),
28+
request_context: ApiGatewayRequestContextV2(
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route_key: "$default",
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account_id: "123456789012",
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stage: "$default",
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request_id: "id",
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authorizer: Some(Lambda(lambda: dict.from_list([
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#("key", "value"),
35+
]))),
36+
api_id: "api-id",
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domain_name: "id.execute-api.us-east-1.amazonaws.com",
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domain_prefix: "id",
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time: "12/Mar/2020:19:03:58+0000",
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time_epoch: 1583348638390,
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http: ApiGatewayEventRequestContextHttp(
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method: "GET",
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path: "/my/path",
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protocol: "HTTP/1.1",
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source_ip: "IP",
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user_agent: "agent",
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),
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authentication: Some(ApiGatewayEventRequestContextAuthentication(client_cert: APIGatewayEventClientCertificate(
49+
client_cert_pem: "-----BEGIN CERTIFICATE-----
50+
MIIEZTCCAk0CAQEwDQ...",
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issuer_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Private CA",
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serial_number: "1",
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subject_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Client",
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validity: APIGatewayEventValidity(
55+
not_after: "Aug 5 00:28:21 2120 GMT",
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not_before: "Aug 29 00:28:21 2020 GMT",
57+
),
58+
))),
59+
),
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body: Some("{
61+
"a": 1
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}"),
63+
is_base64_encoded: False,
64+
)

‎birdie_snapshots/api_gateway_v2_http_request_with_no_authorizer.accepted

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---
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version: 1.2.3
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title: API Gateway V2 HTTP request with no authorizer
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file: ./test/glambda_test.gleam
5+
test_name: api_gateway_v2_http_request_no_authorizer_test
6+
---
7+
ApiGatewayProxyEventV2(
8+
version: "2.0",
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route_key: "$default",
10+
raw_path: "/",
11+
raw_query_string: "",
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cookies: None,
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headers: dict.from_list([
14+
#("accept", "*/*"),
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#("content-length", "0"),
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#("host", "aaaaaaaaaa.execute-api.us-west-2.amazonaws.com"),
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#("user-agent", "curl/7.58.0"),
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#("x-amzn-trace-id", "Root=1-5e9f0c65-1de4d666d4dd26aced652b6c"),
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#("x-forwarded-for", "1.2.3.4"),
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#("x-forwarded-port", "443"),
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#("x-forwarded-proto", "https"),
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]),
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query_string_parameters: None,
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path_parameters: None,
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stage_variables: None,
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request_context: ApiGatewayRequestContextV2(
27+
route_key: "$default",
28+
account_id: "123456789012",
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stage: "$default",
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request_id: "LV7fzho-PHcEJPw=",
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authorizer: None,
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api_id: "aaaaaaaaaa",
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domain_name: "aaaaaaaaaa.execute-api.us-west-2.amazonaws.com",
34+
domain_prefix: "aaaaaaaaaa",
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time: "21/Apr/2020:15:08:21 +0000",
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time_epoch: 1587481701067,
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http: ApiGatewayEventRequestContextHttp(
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method: "GET",
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path: "/",
40+
protocol: "HTTP/1.1",
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source_ip: "1.2.3.4",
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user_agent: "curl/7.58.0",
43+
),
44+
authentication: Some(ApiGatewayEventRequestContextAuthentication(client_cert: APIGatewayEventClientCertificate(
45+
client_cert_pem: "-----BEGIN CERTIFICATE-----
46+
MIIEZTCCAk0CAQEwDQ...",
47+
issuer_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Private CA",
48+
serial_number: "1",
49+
subject_dn: "C=US,ST=Washington,L=Seattle,O=Amazon Web Services,OU=Security,CN=My Client",
50+
validity: APIGatewayEventValidity(
51+
not_after: "Aug 5 00:28:21 2120 GMT",
52+
not_before: "Aug 29 00:28:21 2020 GMT",
53+
),
54+
))),
55+
),
56+
body: None,
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is_base64_encoded: False,
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)

‎birdie_snapshots/api_gateway_v2_http_response.accepted

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---
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version: 1.2.3
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title: API Gateway V2 HTTP Response
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file: ./test/glambda_test.gleam
5+
test_name: api_gateway_v2_http_response_test
6+
---
7+
{
8+
"statusCode": 200,
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"headers": {
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36 OPR/39.0.2256.48",
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"Upgrade-Insecure-Requests": "1",
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"CloudFront-Forwarded-Proto": "https",
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"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
14+
"Host": "wt6mne2s9k.execute-api.us-west-2.amazonaws.com",
15+
"X-Forwarded-Proto": "https",
16+
"X-Forwarded-For": "192.168.100.1, 192.168.1.1",
17+
"CloudFront-Is-Desktop-Viewer": "true",
18+
"Via": "1.1 fb7cca60f0ecd82ce07790c9c5eef16c.cloudfront.net (CloudFront)",
19+
"CloudFront-Is-Tablet-Viewer": "false",
20+
"X-Amz-Cf-Id": "nBsWBOrSHMgnaROZJK1wGCZ9PcRcSpq_oSXZNQwQ10OTZL4cimZo3g==",
21+
"CloudFront-Is-Mobile-Viewer": "false",
22+
"CloudFront-Viewer-Country": "US",
23+
"Accept-Encoding": "gzip, deflate, lzma, sdch, br",
24+
"Accept-Language": "en-US,en;q=0.8",
25+
"CloudFront-Is-SmartTV-Viewer": "false",
26+
"X-Forwarded-Port": "443"
27+
},
28+
"body": "Hello World",
29+
"isBase64Encoded": false,
30+
"cookies": [
31+
"cookie1",
32+
"cookie2"
33+
]
34+
}

‎birdie_snapshots/api_gateway_v2_http_response_with_valid_empty_fields.accepted

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---
2+
version: 1.2.3
3+
title: API Gateway V2 HTTP Response with valid empty fields
4+
file: ./test/glambda_test.gleam
5+
test_name: api_gateway_v2_http_response_valid_empty_fields_test
6+
---
7+
{
8+
"statusCode": 200,
9+
"headers": {},
10+
"isBase64Encoded": false,
11+
"cookies": []
12+
}

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